Guido's Seafood Restaurants House Dressing

Whenever we go to Galveston it's a tradition to eat at Guido's. They have the best seafood in Galveston. I've been known to drive the 45 minutes it takes to get to Galveston, just to eat at Guido's. Anyways back to the subject, their house dressing is the best I've ever had, and every time I would go, I would get some of the dressing to take home. One night many years ago, we were being served by a new server and I asked the question I always asked, what was in the dressing? He told me that it was a Garlic Buttermilk Dressing, That was all I needed to know to crack the code of the dressing.